周 毅1,2,3,陈露一1,2,3,蔡 昱1,2,3,黄有强1,2,3,李 天1,2
周毅,陈露一,蔡昱,等.贵州花江峡谷大桥重力锚基础大体积混凝土温控技术研究[J].混凝土与水泥制品,2024(12):78-82.
ZHOU Y,CHEN L Y,CAI Y,et al.Research on temperature control techniques for mass concrete of gravity anchorage foundation of Huajiang Canyon Bridge in Guizhou[J].China Concrete and Cement Products,2024(12):78-82.
贵州花江峡谷大桥重力锚基础大体积混凝土温控技术研究
周 毅1,2,3,陈露一1,2,3,蔡 昱1,2,3,黄有强1,2,3,李 天1,2
周毅,陈露一,蔡昱,等.贵州花江峡谷大桥重力锚基础大体积混凝土温控技术研究[J].混凝土与水泥制品,2024(12):78-82.
ZHOU Y,CHEN L Y,CAI Y,et al.Research on temperature control techniques for mass concrete of gravity anchorage foundation of Huajiang Canyon Bridge in Guizhou[J].China Concrete and Cement Products,2024(12):78-82.
摘 要:依托贵州花江峡谷大桥重力锚基础工程,采用优化配合比、布置冷却水管、调整混凝土养护制度等措施控制大体积混凝土的温度,采用Midas Civil软件预测了大体积混凝土的温度和应力发展趋势,并通过现场温度监测验证了温控措施的可行性。结果表明:重力锚基础大体积混凝土的温度峰值和里表温差均满足相关标准要求,且现场温度监测结果与仿真计算结果接近;重力锚基础大体积混凝土现场施工时未出现温度裂缝,采取的温控措施切实有效。
Abstract: Based on the gravity anchor foundation project of Guizhou Huajiang Canyon Bridge, measures such as optimizing the mixing proportion, arranging cooling water pipes, and adjusting the concrete curing regimes were adopted to control the temperature of mass concrete, the Midas Civil software was adopted to predict the development trend of the temperature and stress of the mass concrete. And the feasibility of temperature control measures was verified through on-site temperature monitoring. The results show that, the peak temperature and temperature difference between inner and surface of the mass concrete for gravity anchor foundations meet the requirements of the relevant standards. And the on-site temperature monitoring results are close to the results of the simulation analysis. During the construction process, there is no temperature crack in the mass concrete for gravity anchor foundations, and the temperature control measures taken are effective.
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